Which of the following is an example of a synthesis reaction? mg + h2o > mgo + h2 mgo + 2hcl > mgcl2 + h2o mgo + h2o > mg(oh)2 mgcl2 > mg + cl2

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.